Cutter head



C. T. M DANIEL CUTTER HEAD Filed Jan. 19, 1922 \W/ O 0 G O QF Q E O HQHOHQHQH HEQ Dec. 18 1923.

Patented Dec. 1%, i923.

CHARLES T. IVIGDANIEL, F SULLIVAN, INDIANA.

CUTTER HEAD.

Application filed January 19, 1922. Serial No. 530,366.

To all whom it may concern:

Be it known that I, CHARLES T. MCDANIEL,

a citizen of United States, residing at Sullivan, in the county of Sullivan, State of Indiana, have invented certain new and useful Improvements in Cutter Heads; and I do hereby declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same. 1

This invention relates to cutter heads for use in connection with mining machines. and is adaptable particularly to coal cutting machinery.

The primary object of the invention is to provide means of an improved nature for reducing to a minimum the friction between the movable cutter elements and the cutting machine, whereby to increase the efficiency of the machine, to obviate wear of the parts thereof, and to enable the machine to be operated at a minimum cost.

A further object of the invention is to provide antifriction hearing or supporting means for the traveling cutter of the mining machine which may be readily applied to the machine and easily and quickly fitted thereon, which is capable of minute adjustment. which embodies comparatively. few, simple and readily assembled. parts, which may be employed in connection with mining inachines now generally in use, and which has its mechanism so housed and protected as to obviate clogging of the device.

With these objects in view, together with others which will appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts, all as will be more fully described, hereinafter illustrated in the accompanying drawing, and particularly pointed out in the claims;

In the drawing.

Figure 1 is a top plan view, parts broken away, of a cutter head embodying the invention. Y Figure 2 is a transverse sectional view taken substantially upon line 22 of Figure 1. v

Figure 3 is a similar view taken on line 3--3 of Figure 1.

Figure 4 is an enlarged detailed sectional view taken through the antifriction chain.

Referring now more particularly to the tachably secured to the head by means of bolts indicated at 8. The head is of such size as to be adaptable to a common type of coal cutting machine, and is provided intermediate its ends with integrally formed lugs or anchoring members 9, by which the head may be attached to the frame of the cutting machine, the said lugs projecting from the rear edge of the head. Upon the same edge of the said head and near the extremities thereof are channel lugs 10 to which may be connected the cutting chain guides of the machine.

The base plate 6 of the head is provided with an integrally formed upstanding rib 11. the latter extending from one end to the other of the base plate parallel with and spaced a substantial distance inwardly from the forward edge of the cutter head and terminating atits end in annular guide or supporting members 12. This rib constitutes a guide and supporting member for an endless chain indicated at 13, the latter including a number of rollers '14 adapted to engage and ride upon the said rib, and the cutter chain of the mining machine passes from the latter into the head and rests upon the said chain. The roller chain is spaced inwardly from the forward or outer end of the head a distance such as to enable the cutting teeth of the cutter chain to protrude outwardly beyond the outer edges of the head, so that the said teeth will be properly presented to the coal bed or rock.

Means is provided upon the head 5 for properly tensioning the antifriction chain 13, this tightening means includes a block 15 movable laterally of the head between the rests thereon.

base and cover plates thereof and transversely of the head, the said block bein adjusted by means of the screw 16 threa edly engaged with a portion of the head as shown. It is apparent, therefore, that the tension of the chain 13 may be accurately governed by the adjustment of the block. Thev cutter head is provided near its rear edge with an upstanding rib 17 constituting a trackway or guide for the antifriction chain 13, and this rib is continuous throughout the extent of the edge of the said head. The ribs, 11 and 17 are preferably of a height equal to the thickness of the head, and the cover plate 7 By so constructing the device, it is apparent that the opportunity for coal dust and dirt to gain access to theinterior of the head will be greatly minimized.

The antifriction chain 13 includes a plurality of links indicated generally at 19, each of which is'bifurcated at one end to provide spaced cars 20 and at its opposite end havinga tongue 21' to fit within the spaced ears 20 of the' ne 'xt adjacent link. The interengaging earsand' tongues 2021 of the several links are apertured as shown and receive pins'22 for connecting the same together". The extremities of these'pins 22 are provided with bearing portions as shown upon which the rollers 14 are rotatably secured. It will be observed that the rollers Mare of greater diameter. than the lateral dimension ofthe links 19, and the possibility of the said links contacting with the supporting or guide ribs of the head is therefore overcome.

, In practice, the head will be applied to the cutting machine frame by attaching the lugs 9 thereto and securing th lugs lO tothe chain guides of the machine. The cutter chain is then trained from the guiding ma chine over the outer portion ofthe antifriction supporting chain 13, with the cutting teeth thereof pro'trudingbeyond the outer edge of the head 5. The cutter chain is thereforejsupporte'd throughout its cutting operations upon theantifriction chain 13, whereby friction is greatly minimized and yet the chain is properly held inoperative position. Proper tension'of the antifriction chain 13 will. be governed by adjustment of block 15. The upstanding rib 11 forms a support for the entire working portion of the antifriction and cutter chains, and the inoperative portions of the antifriction chain is properly guided intermediate the endsof the cutter bylblock15. rib 17 and at the ends of said head between rib portions 12 andsaid ribs 17.

From the foregoing it will be apparent that I,have" provided a'cutter headofle'x tre'mely simple construction; whichmay be readily applied to a'cutting ma'chine withr out'the exercise o'fja great amount of skill or energy; and-which war greatly enhance the operation of the machine at a reduced cost. The invented characteristics are here in shown as embodied in one type only of 'ar'itifriction chain in said head and traveling upon said trackway, and a cutter chain resting upon said antifriction chain.

2. The combination with a cutting ma chine, of a head adapted to be secured to theframe of the cutting machine, support ing chain mounted for movement within the head, and the said chain being adapted to support the" cutting chain of the said cuttingmachine.

The combination with acutting machine, of afheadadaptedto be secured to the cutting machine, a roller chain carried by said head, and th said rollerchain adapted to operatively support the cutting chain of the. said machine. V c i l 4. The combination with a cutting machine, of ahead adapted to be secured to said machine, an endless roller chain carried by saidhead, guides for said chain, and the cutting chain of said machine adapted to be trained over said head and to rest upon said antifriction chain throughout its working length.

5. In a device of the class described, a

head including spaced plates, a rib' interposed between said plates, an antifriction chain resting uponsai'd rib, means for varying the tension of said chain,and means for attaching said head to a cutting machine. 6. In a device ofthe class described, a head comprising a plateadapted to be secured to a cutting machine,a rib projecting outwardly from said plate and parallel with anedgethereof, the said rib at its ends providing arcuate guide portions, and a second rib in the rear of said head and conforming to the'configuration thereof, a roller chain within said head resting upon said ribs, and a cover plate for said head-adapted to rest upon the outeredges of said ribs.

7. A cutter head including a plate, the said plate having astraight outer edge and rounded ends, a rib extending upwardly from said plate and spaced inwardly. from said outer end of the plate and ends thereof, the said rib being parallel with the outer edge of said head and conforming to the ter head, the said head having a channel in In testimony whereof, I aflix my signature, its outer edge, a roller chain disposed in said in the presence of two witnesses. channel, said chain including interengaging pivoted lugs, pins connecting said lugs, and CHARLES MCDANIEL' a roller member carried by the outer ex- Witnesses: tremities of said pins and traveling Within MAHLON R. GUSTIN,

said channel. LUTHER C. ENGLE. 

